Only one award is given each year, according to a rotating scheme – astronomy and mathematics; then geosciences; then biosciences.[1] A Crafoord Prize is only awarded for arthritis when a committee decides that substantial progress in the field has been made.[1] On Crafoord Day in April, the prize is presented by the King of Sweden, who also presents the Nobel Prize Awards at the ceremony in December.[1][2] The prize is to fund further research by the prize winner. In 2012 it is US$600,000.